What is the difference between 좋아요 and 좋네요? Are 이거 좋아요 and 이거 좋네요 the same thing?

What’s the meaning of the expression 倒追 [dào zhuī]

“Do you speak English?” in Korean Which one of those below is rather correct, and what is the difference between them? 영어를 할 줄 아세요? 영어를 하십니까? 양어 하세요?

Is there a difference between 외 and 웨? Of course, I mean, in pronounciation. Are these diphthongs any different? To me, both of them sound like [we] (wa in way). Though I don’t have a good ear.